JPH05149036A - Jointing construction for diaphragm body, and jointing jig to be used for its jointing construction - Google Patents

Abstract

PURPOSE:To joint the jointing sections of a diaphragm body to each other retaining a roughly uniform tensile force, and lighten the weight of the jointing sections further. CONSTITUTION:A diaphragm body 30 is composed of a plurality of diaphragm pieces 30a jointed to each other. The diaphragm pieces 30a are formed with respective jointing end sections 30b, 30b put together, and the overlap sections 32 are firmly fitted on each other continuously in the jointing direction via adhesives 34. The overlap sections 32 fitted firmly via the adhesives 34 are covered with a gasket 38 formed with an elastic member in the shape of a U-cross-sectional-area. The gasket 38 is formed continuously in the jointing direction of the diaphragm pieces 30a and by an opening section 38a, the base end sections 32b of the overlap sections 32 are retained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure for connecting film bodies with a large bonding force and a connection jig used for the connection structure.

[0002]

2. Description of the Related Art In recent years, there has appeared a structure in which a roof of a structure such as a large space facility having a pillarless structure such as a dome is constructed as a membrane roof. In this membrane connection structure, the upper end of the outer wall surrounding the large space facility is covered with a membrane made of a waterproof flexible membrane. The membrane roof is inflated (inflated) by injecting air into the facility, and a dome-shaped roof having a bulged central portion in the inflated state is configured.

By the way, since the membrane roof needs to continuously cover a large space facility, its area is remarkably large. Therefore, the membrane body constituting this membrane roof is formed by connecting a plurality of membrane pieces to each other. The whole is formed. At this time, the connection between the membrane pieces is, for example,
No. 24857 (E04H 15/54). That is, the connecting fitting is provided with inner and outer presser members which are arranged on both sides of the membrane body across the connecting end portions of the membrane piece, and the connecting end portions of the membrane piece are provided between the presser metal articles on both sides. It is configured such that the bolt is penetrated by sandwiching it, and is tightened via a nut screwed to the bolt.

[0004]

However, in such a conventional connecting structure for a membrane body, as described above, when connecting the connecting end portions of the membrane piece to each other through connecting metal fittings, the connecting end portions are connected to each other. Since the bolt penetrates, it is necessary to form a bolt insertion hole in each connection end in advance. Therefore, the fixing position of the membrane piece with respect to the connection fitting is determined by the position of the bolt insertion hole formed in advance. Therefore, it becomes extremely difficult to evenly apply tension to each film piece in the connecting direction due to an error in forming the bolt insertion hole, a change in expansion and contraction amount of the film piece itself, and the like. Therefore, when the membrane roof is inflated, the tension acting on the membrane body is partially concentrated at the connecting portion, and the durability is reduced at that portion. Further, if the tension is not uniform, the film body is corrugated between the bolts to lower the liquid tightness, and the appearance is significantly deteriorated.

Further, since the inner and outer presser foots of the connecting fitting are usually made of metal, the weight of the connecting fitting becomes large, and the membrane roof itself becomes remarkably heavy. Therefore, as described above, in order to inflate the membrane roof, air is injected into the facility to pressurize it, but this pressing force needs to be further increased, and the blower is inevitably increased in size. There were challenges.

In view of the above-mentioned conventional problems, the present invention allows the connecting portion of the film body to be bonded while maintaining a substantially uniform tension over the entire length, and the connecting portion can be made lighter in weight. An object is to provide a body connection structure and a connection jig used for the connection structure.

[0007]

In order to achieve the above object, the first structure of the connecting structure according to the present invention is to superpose the connecting end portions of the film bodies to be connected to each other, and
The overlapping portion is continuously fixed in the connecting direction of the membrane body, the fixed connecting end is covered with a continuously openable and closable gasket in the connecting direction, and the base end of the overlapping portion is gripped by the opening of the gasket. To have.

Further, in order to achieve the above object, the second structure of the connection structure according to the present invention is to polymerize the connecting end portions of the film bodies to be connected to each other and to connect the polymerized portion to the film body. Direction, the tip end of the fixed connection end is branched and wound around the cord body, respectively, while the overlapped portion including the wound portion is continuously opened and closed in the connection direction of the membrane body. Cover with a possible gasket, the base end of the overlapping portion is held by the opening of the gasket, and a fitting groove is formed on the outer side opposite to the opening of the gasket. Press fit.

Further, in order to achieve such an object, the present invention is provided with a gasket which covers the overlapping portions of the connecting ends of the membrane body so as to be openable and closable, and when the opening portion of the gasket is expanded and attached to the overlapping portion. In the jig for connecting a film body used for, a tapered insertion projection is inserted into the opening of the gasket, the tip is reduced in width, and the base end is formed to have a predetermined width, and the base end of the insertion projection. Both sides of this insertion part and T
A guide protrusion that is formed in a letter shape and is in contact with the tip of the opening, and is formed in the center of the bottom surface of the insertion protrusion,
And a receiving portion into which the overlapped portion of the film body is fitted.

Furthermore, in the connecting jig, a guide groove for fitting the tip of the opening of the gasket is formed at a corner formed by the insertion protrusion and the guide protrusion, and the upper surface of the guide protrusion has a gasket direction. It is desirable to form a curved surface that bulges out.

[0011]

With the above construction, in the first structure of the connection structure of the film body of the present invention, the overlapping portions of the connection end portions of the film body are continuously fixed in the connection direction of the film body. By the fixed portion, liquid tightness can be secured over the entire length of the film body in the connecting direction. Further, since the fixed connection end is covered with a continuous openable and closable gasket in the connection direction, and the base end of the overlapping portion is gripped by the opening of the gasket, the gasket is connected to the connection end. By sequentially attaching from one end in the connecting direction of the end portions, it is possible to connect each while applying uniform tension to the film body. Further, since the connecting portion is simply covered with the gasket, the weight of the connecting portion can be significantly reduced.

In addition to the first structure, the second structure of the connection structure for a membrane of the present invention is such that the tip of the fixed connection end is branched and wound around a cord body, respectively. Since the overlapped portion including the portion is covered with the gasket, it is possible to further prevent each winding portion from acting as a locking portion and the connecting end portion of the membrane being pulled out from the gasket. Further, since the press-fitting member is press-fitted into the fitting groove formed on the outer side opposite to the opening of the gasket, the expansion force when the press-fitting member is press-fitted into the fitting groove is the opening of the gasket. It acts as a closing force on the portion, and the gripping force by this gasket can be significantly increased.

Further, in the first and second configurations, the connecting jig used for expanding the gasket and attaching it to the connecting end portion of the film body is inserted into the opening portion of the gasket and the tip thereof is narrowed. At the same time, the base end portion is formed into a predetermined width, and the insertion protrusion is formed in a substantially T-shape with the insertion portion on both sides of the base end portion of the insertion protrusion. By providing a guide protrusion to be abutted,
When the insertion protrusion is inserted into the opening of the gasket and the tip of the opening of the gasket is in contact with the guide protrusion, the opening of the gasket is widened in the vicinity of the insertion protrusion. Therefore, first, the insertion protrusion is inserted into the end of the gasket to expand the opening of the end,
The expanded portion is fitted to the overlapped portion of the film body, and the connecting jig is moved in a state where the guide protrusion is in contact with the tip of the opening portion of the gasket to expand the opening portion. You can move parts one after another. Therefore,
By sequentially fitting the portion where the opening portion of the gasket is expanded to the overlapping portion, it is possible to remarkably simplify the mounting work of the gasket. At this time, the overlapped portion of the film body is fitted into the receiving portion formed in the central portion of the bottom surface of the insertion protrusion, thereby bringing the gasket and the overlapped portion into close proximity to each other, thereby making it easier to attach the gasket. be able to.

Furthermore, in the third structure, the connecting jig is moved by forming a guide groove at the corner formed by the insertion protrusion and the guide protrusion so as to fit the tip of the opening of the gasket. This jig can be prevented from coming off from the gasket, and the curved surface that bulges in the gasket direction is formed on the upper surface of the guide projection to smooth the movement of the connecting jig. It can be carried out.

[0015]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 and 2 show a first embodiment of a connection structure of a membrane body according to the present invention, and FIG. 1 is a schematic configuration diagram showing a cross section of a large space facility using a roof membrane to which the present invention is applied, FIG. FIG. 2 is an enlarged cross-sectional view showing a mounting state of the gasket, which is a cross-section taken along the line AA in FIG. 1.

That is, the large space facility shown in FIG. 1 is used as an artificial ski resort 10. Outer walls 12, 12 which are continuous in the direction perpendicular to the plane of the drawing in the figure are constructed on both sides.
A membrane roof 14 is stretched between the upper ends of the two members 12. The floor surface 18 of the large space portion 16 formed by the outer walls 12 and 12 and the membrane roof 14 is continuously inclined in the extending direction of the outer walls 12 and 12, and the floor surface 18 is artificially attached to the inclined floor surface 18. It is possible to glide on the snow by forming snow on the slope.

The membrane roof 14 is inflated by injecting air into the large space 16 in the solid line state in FIG. 1, and the internal air pressure is removed in the two-dot chain line state to deflate. The state is shown. The membrane roof 1
4 is supported by a plurality of cables (not shown) provided between the upper ends of the outer walls 12, 12. A machine room 24 and a lift room 26 are provided outside the outer walls 12, 12, and an air conditioner, an artificial snowmaking machine, a snow gun, etc. are installed in the machine room 24.

The membrane body 30 constituting the membrane roof 14 is constructed as a whole by connecting a plurality of membrane pieces 30a, 30a to each other as shown in FIG. These membrane pieces 3
0a and 30a are connected to the respective connection ends 30b and 3
0b are polymerized with each other, and the polymerized portion 32 is continuously fixed in the connecting direction via an adhesive 34. still,
In this embodiment, the overlapped portion 32 is bent from a substantially central portion, and an adhesive 36 is applied between the bent portions to fix them.

The overlapping portion 32 fixed by the adhesives 34 and 36 is covered by a gasket 38. The gasket 38 is formed of an elastic member such as rubber so as to have a U-shaped cross section, and is formed continuously in the connecting direction of the film piece 30a, so that the opening 38a can be opened and closed. Then, the opening portion 38a is naturally closed, and the gasket 38 is closed.
When it is attached to the
The second base end portion 32a, that is, the portion (lower end portion in the drawing) connected to the general portion of the membrane pieces 30a, 30a is gripped.

By the way, when the gasket 38 is attached to the overlapping portion 32, the connecting jig 40 shown in FIGS. 3 to 6 is used. The connection jig 40 includes an insertion protrusion 42 that is inserted into the opening 38a of the gasket 38,
The insertion protrusion 42 is formed in a substantially T-shape with the guide protrusions 44, 44 protruding on both sides of the base end portion of the insertion protrusion 42.
A receiving portion 46 for fitting the overlapping portion 32 is formed in the center of the bottom surface 42a of the second portion 2. The insertion protrusion 42
Is formed in a taper shape in which the tip end arranged in the upper part of the drawing is reduced in diameter, and the base end part arranged in the lower part of the drawing is formed to have a predetermined width w.

Further, the gasket 38 is provided at a corner formed by the insertion protrusion 42 and the guide protrusions 44, 44.
Of the gasket 3 is formed on the upper surfaces of the guide protrusions 44, 44, while the guide groove 48 for fitting the tip of the opening 38a of
A curved surface 50 that bulges in eight directions is formed. The outer surface of the guide protrusions 44, 44 has an uneven slip stopper 5
2 is formed.

In the present embodiment having the above-described structure, the film body 30 is configured as a whole by connecting a plurality of film pieces 30a to each other.
The polymerized portion 32 obtained by polymerizing the connection end portion 30b of the
Since they are fixed to each other continuously in the connecting direction via 4, 36, the liquid-tightness can be secured over the entire length of the membrane piece 30a in the connecting direction by this fixed portion.

Further, the fixed connection end portions 30b, 30
The gasket 38 covering b is configured to hold the base end 32a of the overlapping portion 32 by the opening 38a of the gasket 38. Therefore, by sequentially attaching the gasket 38 from one end of the connecting end portion 30b in the connecting direction (the direction perpendicular to the paper surface in the drawing), the gasket 38 pulls the membrane pieces 30a, 30a while the opening 38a is formed. The base end 32a can be grasped and carried. Therefore, the tension acting on the connecting portion of each of the membrane pieces 30a, 30a can be equalized over the entire length thereof.

Further, the connecting portion is simply a gasket 38.
Since the gasket 38 is made of an elastic member such as rubber, the weight of the connecting portion can be significantly reduced. Therefore, the roof membrane 14
The weight of the whole is remarkably reduced, and the pressure applied when inflating it is reduced, so that the blower can be downsized.

By the way, in this embodiment, when the gasket 38 is attached to the connecting end portions 30b and 30b, the insertion protrusion 42 and the guide protrusions 44 and 44 are used to form a T-shape.
A connecting jig 40 formed in a letter shape is used. Therefore, in the connection jig 40, the insertion protrusion 42 is inserted into the opening of the gasket 38 as shown in FIG. 4B, and the tip of the gasket 38 is in contact with the guide protrusions 44, 44. Then, this gasket 38
The opening 38a can be greatly expanded in the vicinity of the insertion protrusion 42.

Therefore, first, the insertion protrusion 42 is inserted into either end of the gasket 38 to expand the opening 38a at the end, and the expanded portion is overlapped with the film body 30. 32 is fitted. Then, the guide protrusion 4
By moving the connecting jig 40 in a state in which 4, 44 are in contact with the tip of the opening 38a, the expanded portion of the opening 38a can be moved sequentially. Accordingly, by sequentially fitting the expanded portion of the opening 38a of the gasket 38 into the overlapping portion 32, the work of mounting the gasket can be significantly simplified. still,
By fitting the overlapping portion 32 into the receiving portion 46 formed at the central portion of the bottom surface 42a of the insertion protrusion 42 during this attachment, the gasket 38 and the overlapping portion 32 can be brought close to each other, and the gasket 38 The installation work of can be made easier.

Further, the connecting jig 40 is provided with an insertion protrusion 4
Since the guide groove 48 for fitting the tip of the opening 38a of the gasket 38 is formed at the corner formed by 2 and the guide protrusions 44, 44, the connecting jig 40 is moved along the gasket 38. At this time, the jig 40 is attached to the gasket 3.
It is possible to prevent the person from getting out of the position 8. Further, since the curved surface 50 that bulges toward the gasket 38 (upward in the drawing) is formed on the upper surfaces of the guide protrusions 44, 44, the connection jig 40 can be smoothly moved. Furthermore, since the slip stoppers 52 are formed on the outer side surfaces of the guide protrusions 44, 44, it is possible to prevent slippage when the connection jig 40 is moved by gripping the outer side faces of the guide protrusions 44, 44. You can

7 (A) and 7 (B) show a second embodiment of the present invention, in which the same components as those of the above-mentioned embodiment are designated by the same reference numerals, and a duplicate description will be omitted. It is to be noted that FIG. 2A is a sectional view corresponding to FIG. 2 showing a connection completed state, and FIG.
[Fig. 3] is a cross-sectional view showing the middle of connection.

That is, in this embodiment, similar to the above-mentioned embodiment, the film pieces 30a, 30 fixed by the adhesive 34 are used.
The connecting end portions 30b and 30b of a are fixed to each other continuously in the connecting direction via an adhesive 34, and the end portions of the fixed connecting end portions 30b and 30b are branched to the cords 60 and 60, respectively. To wind. Then, these cords 60, 60
The gasket 62 covers the overlapped portion 32 of the connection end portions 30b and 30b including the wound portion.

The opening 62 is formed in the gasket 62.
A fitting groove 64 is formed on the outer side of the side opposite to a (upper side in the drawing), and the press-fitting member 66 is press-fitted into the fitting groove 64. The fitting groove 64 is formed in a dovetail shape, the press-fitting member 66 is formed in a cross-sectional shape substantially along the fitting groove 64, and the press-fitting member 66 is formed in the fitting groove 6.
It is formed slightly larger than 4.

In the second embodiment of the present invention having the above-mentioned structure, the same function as that of the first embodiment can be exerted, as well as the connecting end portion 30b of the membrane pieces 30a, 30a. , 30b are diverged from the tip of the string body 60,
Since the wound portion is wound around 60 and the overlapped portion 32 including these wound portions is covered with the gasket 62, each wound portion serves as a locking portion and the connecting end portions 30b and 30b are removed from the gasket 62. Can be further prevented.

The opening 62a of the gasket 62 is also used.
Since the press-fitting member 66 is press-fitted into the fitting groove 64 formed on the outer side on the opposite side to the press-fitting member 6 in the fitting groove 64.
The expanding force F1 when the 6 is press-fitted acts on the opening 62a of the gasket 62 as a closing force F2, and the gripping force of the gasket 62 at the base end of the overlapping portion 32 can be significantly increased.

In each of the above-described embodiments, the case where the present invention is applied to the membrane roof 14 is disclosed, but it goes without saying that the present invention is not limited to this and can be applied to connection of general membrane bodies.

[0034]

As described above, in the connecting structure of the film body according to the first aspect of the present invention, the overlapping portions of the connecting end portions of the film body are continuously fixed in the connecting direction of the film body. Therefore, the liquid tightness can be secured over the entire length of the film body in the connecting direction. Further, since the fixed connection end is covered with a continuous openable and closable gasket in the connection direction, and the base end of the overlapping portion is held by the opening of the gasket, the gasket is connected to the connection end. By sequentially attaching from one end in the direction, it is possible to connect each while applying uniform tension to the film body. Further, since the connecting portion is simply covered with the gasket, the weight of the connecting portion can be significantly reduced.

Further, in the connection structure of the film body according to claim 2 of the present invention, the liquid-tightness is ensured over the entire length of the connection direction of the film body as in the case of the structure of claim 1. Of course, it is possible to apply uniform tension to the film body, and further, it is possible to reduce the weight of the connection portion, and the tip end of the connection end portion of the film body is branched and wound around each string, Since the overlapped portion including the wound portion is covered with the gasket, each wound portion serves as a locking portion, so that the fixing force by the gasket can be further increased. Further, since the press-fitting member is press-fitted into the fitting groove formed on the outer side of the gasket on the side opposite to the opening, the gripping force of the overlapping portion by the gasket can be remarkably increased.

Further, in the connecting jig used for the connecting structure of the film body according to claim 3 of the present invention, the inserting protrusion and the guide protrusion are formed in a substantially T shape, and the inserting protrusion is a gasket. When the distal end of the opening of the gasket is in contact with the guide projection, the opening of the gasket can be greatly expanded in the vicinity of the insertion projection. Therefore, the work of mounting the gasket can be remarkably simplified by successively fitting the openings that are widened as the connecting jig moves into the overlapping portions of the connecting end. At this time, the overlapped portion of the film body is fitted into the receiving portion formed in the central portion of the bottom surface of the insertion protrusion, thereby bringing the gasket and the overlapped portion into close proximity to each other, thereby making it easier to attach the gasket. be able to.

Furthermore, in claim 3 of the present invention,
Since the guide groove for fitting the tip of the opening of the gasket is formed at the corner formed by the insertion protrusion and the guide protrusion in the connecting jig, the jig is removed from the gasket when the connecting jig is moved. Not only can it be prevented from coming off, but since the curved surface that bulges in the gasket direction is formed on the upper surface of the guide protrusion, various excellent effects that the connection jig can be moved smoothly Play.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing a cross section of a large space facility using a roof membrane to which the present invention is applied.

FIG. 2 is an enlarged cross-sectional view showing a first embodiment of the present invention and showing a state in which a gasket is attached, which is taken along the line AA in FIG.

FIG. 3 is a perspective view showing a mounting state of a gasket using the connecting jig used in the first embodiment of the present invention.

FIG. 4 (A) is an enlarged perspective view of a cross section of a main part showing the middle of attachment of the connecting jig and the gasket used in the first embodiment of the present invention. FIG. 3B is an enlarged perspective view in which a main part showing a mounting state of the connection jig and the gasket used in the first embodiment of the present invention is shown in section.

FIG. 5 is a side view of a connection jig used in the first embodiment of the present invention.

FIG. 6 is an enlarged cross-sectional view of a connecting jig used in the first embodiment of the present invention.

FIG. 7 (A) is an enlarged sectional view corresponding to FIG. 2, showing a second embodiment of the present invention. (B) It is an enlarged sectional view showing a disassembled state of the second embodiment of the present invention.

[Explanation of symbols]

 10 Artificial Ski Area (Large Space Facility) 12 Outer Wall 14 Membrane Roof 30 Membrane 30a Membrane Piece 30b Connection End 32 Polymerization Part 34 Adhesive 36 Adhesive 38 Gasket 38a Opening 40 Connection Jig 42 Insertion Protrusion 42a Bottom 44 Guide Protrusion 46 Receiving part 48 Guide groove 50 Curved surface 50 String 62 Gasket 64 Fitting groove 66 Press-fitting member

Claims (4)

[Claims] 1. The superposition of the connecting end portions of the film bodies to be connected to each other, the superposed portion is continuously fixed in the connecting direction of the film body, and the fixed connecting end portions are continuous in the connecting direction. A structure for connecting a film body, characterized in that it is covered with an openable and closable gasket, and the base end portion of the overlapping portion is held by the opening portion of the gasket. 2. The superposition of the connecting end portions of the film bodies which are to be connected to each other, the superposed portion is continuously fixed in the connecting direction of the film body, and the tip of the fixed connecting end portion is branched. While each of them is wound around the cord body, the overlapped portion including these wound portions is covered with a continuously openable and closable gasket in the connecting direction of the film body, and the base end portion of the overlapped portion is opened by the opening of the gasket. A structure for connecting a film body, which is characterized in that a fitting groove is formed on the outside of the gasket on the side opposite to the opening, and a press-fitting member is press-fitted into the fitting groove. 3. A gasket for connecting a membrane, which comprises a gasket that covers the overlapped portions of the connection ends of the membrane so that the gasket can be opened and closed, and the opening of the gasket is widened and attached to the overlapped portion. Of the taper-shaped insertion protrusion, which is inserted into the opening portion of the insertion protrusion and has a reduced width at the tip end and a predetermined width at the base end portion, and a substantially T-shape with the insertion portion on both sides of the base end portion of the insertion protrusion. A guide protrusion that is formed and protrudes and is brought into contact with the tip of the opening, and a receiving portion that is formed in the center of the bottom surface of the insertion protrusion and that receives the overlapping portion of the film body. A jig for connecting the film body. 4. A guide groove for fitting the tip of the opening of the gasket is formed at a corner formed by the insertion projection and the guide projection, and a curved surface bulging toward the gasket is formed on the upper surface of the guide projection. It is formed, It is characterized by the above-mentioned.
The jig for connecting a film body according to item 1.